minute to middle-sized, 0.2 to 0.8 mm. in diameter, adnate, scattered
or crowded, rounded or variously irregular, black but usually dark red
when damp, flat or slightly convex, the thin exciple raised and
persistent; hypothecium light or darker brown; hymenium pale or tinged
brown; paraphyses semi-distinct to coherent-indistinct; asci
cylindrico-clavate; spores oblong-ellipsoid, 3 to 5 mic. long and 1 to
1.5 mic. wide.

Collected in Butler, Adams, Montgomery, Hocking, and Ross counties. On
limestone. Not previously reported from Ohio, but probably frequent
where there is limestone, though inconspicuous and easily overlooked.


2. Biatorella pruinosa (J.E. Smith) Mudd Man. Brit. Lich. 191. 1861.

_Lichen pruinosus_ J.E. Smith in Sowerby, Eng. Bot. 32: pl. 2244 1811.

Thallus light colored, usually thin and smooth, rarely disappearing;
apothecia minute to middle-sized, 0.2 to 1 mm. in diameter, adnate
scattered or crowded, flat or slightly convex, the disk pruinose, and
the exciple persistent; hypothecium lighter or darker brown; hymenium
usually pale; paraphyses coherent and becoming indistinct; asci
cylindrico-clavate; spores oblong-ellipsoid, 3 to 5 mic. long and 1 to
1.5 mic. wide.

Collected in Butler and Adams counties. On limestone. Not previously
reported from Ohio, but often occurring with the last in limestone
areas.